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A simple random sample of pages of my dictionary was collected. These are the number of words defined on each page. Find the mean, median, and mode.
63 36 42 44 62 73 39 51 51 67
consider the following. give your answers correct to two decimal places.a determine the value of the confidence
Refer to the Website developer data set in Appendix C.6 and Case Study 9.29. The observations are listed in time order. Using the model developed in Case Study 9.29. test whether or not positive autocorrelation is present: use α = .01.
Find the 90%, 95% and 99% confidence intervals for the proportion of all voters who favor the issue. How many more voters should we include in the sample if we need to reduce the margin of error by half?
What is the parametric counterpart to the Wilcoxon rank sum test? Compare the assumptions involved in using the respective tests.
Goofy's fast food center wishes to estimate the proportion of people in its city that will purchase its products. Suppose the true proportion is 0.07.
If the excess return on the sample of 13 stocks averaged 3.1% and had a standard deviation of 1%, do you believe that inclusion in the Standard & Poor's 500 Index changes a stock's excess return on investment, and if so, in which direction? Explai..
A parent is deciding which babysitter to use in the neighborhood. Babysitter A charges $20 per hour and a base rate of $60 per day. Babysitter B charges a base rate of $50 per day and $25 per hour.
Set up the appropriate null and alternative hypothesis for testing whether the original sample overestimated the average executive director annual salary.
There a flu epidemic that is spreading across SF County. You are a principle and are in charge of 32 teachers. You want to plan ahead and be able to estimate how many substitute teachers the school may need during this epidemic.
What kind of analysis should he choose to analyze the data from this study
A drawer contains eight pairs of socks. Ifsix socks are taken at randm and·without replacement. compute the probability that there is at least one matching pair among these six socks. Hint: Compute the probability that there is not a matching ..
Determination of Nominal, Ordinal, Interval, Ratio.Temperature is an example of what level of measurement.
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